@OneToMany(mappedBy="order".cascade=CascadeType.ALL fetch @OrderBy(value="idASC") public Set<Orderltem>getOrderltems) return orderltems. public void setOrderltems(SetOrderItem>orderItems) this orderltems=orderltems, @Temporal(value=TemporalType TIMESTAMP) public Date getCreatedate return createdate public void setCreatedate Date createdate) this.createdate createdate: public void addOrderltem(Orderltem orderitem) if(!this orderltems.contains(orderitem)) thisorderltems add(orderitem); orderitem.setOrder(this) public void removeOrderltem(Orderltem orderitem) if (this orderltems containsorderitem)){ orderitem.setOrder(ul) (orderitem) 体幸 ·返回对象的散列代码值。该实现根据此对象 幸中orderid字段计算散列代码值， ◆@return此对象的散列代码值。 @Override public int hashCode() int hash=0 hash +=(this.orderid !null this.orderid.hashCode():0): return hash; @OneToMany(mappedBy="order",cascade = CascadeType.ALL, fetch = FetchType.LAZY) @OrderBy(value = "id ASC") public Set<OrderItem> getOrderItems() { return orderItems; } public void setOrderItems(Set<OrderItem> orderItems) { this.orderItems = orderItems; } @Temporal(value=TemporalType.TIMESTAMP) public Date getCreatedate() { return createdate; } public void setCreatedate(Date createdate) { this.createdate = createdate; } public void addOrderItem(OrderItem orderitem) { if (!this.orderItems.contains(orderitem)) { this.orderItems.add(orderitem); orderitem.setOrder(this); } } public void removeOrderItem(OrderItem orderitem) { if (this.orderItems.contains(orderitem)) { orderitem.setOrder(null); this.orderItems.remove(orderitem); } } /** * 返回对象的散列代码值。该实现根据此对象 * 中 orderid 字段计算散列代码值。 * @return 此对象的散列代码值。 */ @Override public int hashCode() { int hash = 0; hash += (this.orderid != null ? this.orderid.hashCode() : 0); return hash; }